Developer's DescriptionBy plexxIT GmbHCalculate percentage and polynomial equations on your Windows 8 device.PolRechner for Windows 8 is a calculator by reverse polish notation with many features. Amongst others sin(x), cos(x), tan(x), root, pow(x, y), log, and percentage calculation. Polish notation the operators follow their operands for instance, to add 3 and 4, one would write "3[Return]4[Return]+" rather than "3+4[Return]".